Transporting apparatus.



o. KRMER.' IRANSPOIHING APIARATUS. APPLICATION FILED APR. 16. 1908.

Patented 1360.29, i908.

UNTED STATES PATENT FFQE.

CHRISTIAN KRMER, or*FaANKFoR'r-oN-THE-MAIN, GERMANY, AssrGNoR fro THE Fran or FELTEN a GUILLEAUME-LAHMEYERWEBKE AKTIEN-casnLLsonAr'r. or FRANK- FQRT-ON-THE-MAIN, GERMANY.

TRAN SPORTING APPARATU,

no. s073819.

' Specification of Lettere Patent.

Patented Dec. 29, lace.

@prestan sied April 1e, isos. sain No. tamos.

To all whom it may concern:

Be it known that I, v(/amsfruut Kalman, a

I- subject of the German Emperor, and a resi dent of Frankfort-on-the-lvlaim Germany,

have invented certain new and useful 1mprovements in or Relating to Transporting Apparatus, of which the tollowing is a speci. ication. t My invention relates to a device for transporting articles, such as large .quantities of goods, between points which alter their distance apart, without the transport beingV affected by such alteration. For instance, such devices could be used for transshipping cargo from one ship to another, or to land, or vice versa. The transport is generally effected by a cable which is stretched between the two movable points, and the length of the cable must be altered in act cordance with the alterations which take place in the distance, in order to insure a constant tension oi the cable and constant speed of conveying.l

According to my invention, the tightening of the cable to suit the change in the distance is effected in a very simple manner compared with existing constructions.. v According to my invention, the driving motor, for instance a normal electric motor, preferably a series motor, drives one element of a differential gear (which could be replaced by a planet gear) While the' second element is used for driving the transport Acable and the third element for tightening the cable. v

A construction according to this invention is illustrated, by way of example, in the ac com anyingA drawing.

T e normal motor a drives for instanceby means of a spindle b a toothed wheel c. yThe said toothed wheel c engages with the central Wheels d'and e of a diilerential gear which in their turn again drive the toothed wheel f and are themselves connected with the inner face of av cable drum i. This cable drum i serves-for tightening the transport cable c passing over a pulley Z arranged at the second station and carr ing from one station to the other oods or t e like secured to the travel-Y e ing ca le k. .The toothed wheel f drives a pul ey g over which a cable t' or the like-leads to the pulle h arran ed at-a iixed distance from the pu ley g. T e plulley hdrives'in its turn the spindle m and t a state of equilibrium in the system.

out that the single e pulley a secured.

tol the latter, whereby the transport cable l; is driven and travels over the pulleys o and p of a pulley block. The pulley o or' the said pulley block are mounted in a bracket or sheave r secured to a cable s secured to the drum If for instance owing to the two ships gettin nearer to each other, the slack of the cable: becomes greater and therefore the tension' smaller, the force required for driving the cable will first become smaller, that is to say the pulleyl will be relieved of a portion of its load. 'lhe result of this will be original tension of the cable has been reestablished, that is to say until there is a' ailn e movement of the drum i will be the quicker, the greater the portion of the cable to be Wound up, so that the device according to myvinvention acts in ,such a Vay as to bring about as uickly as possible the reestablishment of t e normal working' state which is ferential gear etc. thetwo stations move away from each other, then, as will be clearly seen from the drawing, thedrum i will deliver as muchcable as required by the increase of the distance between the two stations. In each case, the speed .transmitted to the transport cable 7c by means of the cable t, will however remain practically constant.

By means of my invention it is therefore .that the drum i will 'be rotated until the fixed by Vthe ratio of transmission in the dif- If, on the other hand,.

possible toinsure with the assistance of a normal motor and oi a differential gear, a

continuous automaticv regulation of av constant tension of the cable and of a constant speed of transport.' it must also be pointed driving elements of the differential gear could be exchanged for each other in any desired manner, since each of the elements could be used for tightening the cable or for transporting or for drivirfg the motor. It is also possible, and in some cases advisable, to regulate the tension \of the cable b additional braking forces which are allowe to act on the cable. y

I claim:

A1. The combination with an endless conveyer extending between two points, the distance separating .which is subject to frequent variation while the conveyer is in operation, of a motor, means connecting the motor and conveyor for driving the latter, and means actuated by the motor for maintaining the l tension of the eonveyer uniform as the. dis tance between said peints changes.

2. 'l'he combination with an endless conveyer extending between two points, the distance separating'whieh is subject to frequent variation while the conv'eyer is in operation, of a motor, a gear adapted to be rotated by the motor, means for transmitting power from saidgear to the eonyeyer7 a drum conneeted by gearing with said gear, and a cable connecting said drum with one of the supports of the conveyer, whereby the tension of the latter will be maintained uniform regardless of Variation in the distance separating said points.

3. 'l he combination with an endless eon- Veyer extending between two points, the distance separating which is subject to frequent variation while the conveyer is in operation, of a motor, a gear adapted to be rotated by the motor; means for transmitting power from said gear to the eonveyer, a drum surrounding and geared with said gear, and a cable connecting said drum with one of the supports of the eonveyer, whereby the ten-- sion 0l the latter will be maintained uniform regardless of Variation 'n the distance sepa rating said points.

4. 'lhe combination with an endless conveyer extending between two points, the distance separating which .is subject to frequent Variation while the eenveyer'is in operation, a motor7 a drum surrounding and connected with one member of a lilerential gear, eonneet-ions between said dill'erential gear and a motor, and a cable connecting said drum with one of the supports of the eonveyer, whereby the tension of the latter will not be aected by variations in the distance sepau rating said points.

In testimony whereof have signed my name to this specification in the presence ol` two subscribing witnesses.

ClltIS'l AN KRAMER.

Vitnesses:

EnwrN Drrrrir., Micnann Vous. 

